The Odessa Astronomical Calendar (OAC-2018) is dedicated for the broad public sections from the pupils to professional astronomers. Information quoted in the Calendar could be useful for ordinary citizens, as well as for lawyers, public prosecutors and investigators requiring for their professional activity the determination ot the precise moments of the sunsets and sunrises, Moon rise, and Moon phases, exact time of twilight etc. Calendar will be also helpful for the School teachers, and lecturers ot the colleges and universities. Many interesting things can be found here by astronomy amateurs and those people who are interested in the news of astronomy. Professional astronomers can use Calendar as a preliminary help manual. In addition to the described in Calendar (OAC-2018) the main astronomical events of the current year and the corresponding tables that define positions of celestial bodies and the time of those events observations, the Calendar also contains several articles about some interesting astronomical problems and jubilee dates. Calendar continues tradition of a description of the different astronomical topics and objects. This release calendar continues the tradition of initiation of on of the most interesting problem - the stars, near of which may be biological life.